I’ve been watching various electronic displays during the recent snowy conditions in the UK. These rarely have wipers of any kind.
It seems to me that today’s invention should be a public information display which senses how much of its output is being obscured by snow or mud or whatever and squeezes the message into the part of the display which is not yet affected.
This could be done by mild distortion of the characters so as to fit the clear part of the screen and/or by preferentially showing those data which have been previously tagged as most salient (perhaps cycling these so that all of the message is seen sequentially).
